DDR is th most common variety nowadays and th cheapest, with DDR2 gradually appearing on store shelves. Go for DDR 333 or 400, and if u can afford it and hv a motherboard that supports DDR2, go for DDR2 memory, but it will be way costlier than DDR.
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I was here when the forum's swear filter kept bleeping out the word 'FUNK'. :crazy::censored::eeksign: